Last official estimated population of Grant County was 4,536 (year 2014)[1]. This was 0.001% of total US population and 0.1% of total Oklahoma state population. Area of Grant County is 1,003.6 mi² (=2599.3 km²), in this year population density was 4.52 p/mi². If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Grant County population in 2024 would be 4,559 [0].
Historical population of Grant County for period 1880-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1880-1890] +INF %/yr
[1890-1900] +0.21 %/yr
[1900-1910] +0.62 %/yr
[1910-1920] -1.53 %/yr
[1920-1930] -1.27 %/yr
[1930-1940] -0.75 %/yr
[1940-1950] -2.25 %/yr
[1950-1960] -2.48 %/yr
[1960-1970] -1.33 %/yr
[1970-1980] -0.88 %/yr
[1980-1990] -1.35 %/yr
[1990-2000] -1 %/yr
[2000-2005] -1.49 %/yr
[2005-2010] -1.04 %/yr
[2010-2014] +0.05 %/yr
Looking for settlements in Grant County? Visit this page: Settlements in Grant County, OK
Population of Grant County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 117 | 159 | 276 |
| 5 to 9 | 142 | 162 | 304 |
| 10 to 14 | 165 | 151 | 316 |
| 15 to 19 | 139 | 129 | 268 |
| 20 to 24 | 112 | 107 | 219 |
| 25 to 29 | 120 | 111 | 231 |
| 30 to 34 | 103 | 133 | 236 |
| 35 to 39 | 124 | 114 | 238 |
| 40 to 44 | 116 | 112 | 228 |
| 45 to 49 | 134 | 133 | 267 |
| 50 to 54 | 195 | 152 | 347 |
| 55 to 59 | 167 | 160 | 327 |
| 60 to 64 | 165 | 150 | 315 |
| 65 to 69 | 117 | 131 | 248 |
| 70 to 74 | 84 | 113 | 197 |
| 75 to 79 | 99 | 92 | 191 |
| 80 to 84 | 62 | 98 | 160 |
| 85+ | 51 | 82 | 133 |
Grant County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| WAC | 2125 | 2192 | 4,317 |
| NH | 2105 | 2201 | 4,306 |
| WA | 2068 | 2132 | 4,200 |
| NHWAC | 2024 | 2111 | 4,135 |
| NHWA | 1977 | 2060 | 4,037 |
| IAC | 99 | 98 | 197 |
| H | 107 | 88 | 195 |
| HWAC | 101 | 81 | 182 |
| NHIAC | 86 | 83 | 169 |
| HWA | 91 | 72 | 163 |
| TOM | 63 | 64 | 127 |
| IA | 55 | 56 | 111 |
| NHTOM | 53 | 55 | 108 |
| NHIA | 50 | 49 | 99 |
| BAC | 43 | 52 | 95 |
| NHBAC | 41 | 50 | 91 |
| BA | 23 | 30 | 53 |
| NHBA | 23 | 30 | 53 |
| HIAC | 13 | 15 | 28 |
| AAC | 10 | 11 | 21 |
| HTOM | 10 | 9 | 19 |
| NHAAC | 8 | 11 | 19 |
| HIA | 5 | 7 | 12 |
| AA | 3 | 6 | 9 |
| NHAA | 2 | 6 | 8 |
| NAC | 2 | 2 | 4 |
| NHNAC | 2 | 2 | 4 |
| HBAC | 2 | 2 | 4 |
| HAAC | 2 | 0 | 2 |
| HAA | 1 | 0 | 1 |
| NHNA | 0 | 1 | 1 |
| NA | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| HBA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Garfield County population
28.3 mi, 
179°
• Kay County
35.7 mi, 
87°
• Sumner County
35 mi, 
27°
• Kingfisher County
58.5 mi, 
188°
• Noble County
41.4 mi, 
132°
• Kingman County
56.4 mi, 
339°
• Major County
53.2 mi, 
231°
• Harper County
31.6 mi, 
330°
• Alfalfa County
29.9 mi, 
262°
• Barber County
57.9 mi, 
301°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
*Indian lands Oklahoma Notes
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